1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ee732e1c870cc7e4107e956baadc09060474e1d1f9aff899598dbb6a275653. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0248f7a4-6659-4157-9081-8a000dfad55f.json and https://artists.proofprofile.net/proofs/artist/0248f7a4-6659-4157-9081-8a000dfad55f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562108c2401d6da5928437cf6c0af0506e747e44a3d48bec5697d7c76b4c78a8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c7bb07391e1277a52d7fd0b256e93f759095b63e0f1e7442d3bbb4206218f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f80072f1ebc38405dffb26aa782af6c8b0e73c8ceca56215d962992155696. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9b55639b11f1d1d463fd8ea230baa63b79334f87aa4f300d1c15b0e8bb832. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689657c47d8f210e14a1915eaf34319279d9274a2c470b08629a7212481d1438. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f7f1d8740bc8ab9116f59a4981b49a88716a384baa98c189f55b425d1bf632. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79af35ec28d7b56408f0d48f0fcc86e1a6d386866ab72bef93f59b6ead8733e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb370ca7650cae5df1d7b31fd114e556f8f143f7ada60ce81dc75d2d31b9bbe. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b3ac2f82ad2fa1606610934e735781efba0121a8a53f97e43a7c068ee1d3f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f35829c2604c04524d73151e3c4c407dfed5f92383be878635e653fe560e82. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698bea7a571cfe04edb23ddce9a36c099599716a77860cc16777913c32b7d59a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24c9bf7106312d5fc668f73cbcb279a26a5fc0578ecffe1286d80d3abafb2ac. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541630265.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d95a4c81b43ba1625365ba78c55188c2349d1f810d59d3f0c027f538570568. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61187cdad1c6ed7ccfa5fc5565bc187e26698d41322396a100e9a593e1771dfc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe397ee1b00bb9c2760a291880f20f4d5ea8b4b6afcb359cd7fc1eeffd0453f20. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a14434bd010c10e43e6b5e87449b589678f44a2f04b41d10a980ea1b09df06. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad5fd93ea754423cfa7a03bbc6b805247ca5d717b7e7f5e99369deac3a79f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85989d078afc05412583637f29ef93c5c02a11f001b4e3858cae38eb973e2e27. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:03:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541700015.
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